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<h1 align="center">FAX2TIFF</h1>

<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#OPTIONS">OPTIONS</a><br>
<a href="#DIAGNOSTICS">DIAGNOSTICS</a><br>
<a href="#BUGS">BUGS</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>

<hr>


<h2>NAME
<a name="NAME"></a>
</h2>


<p style="margin-left:11%; margin-top: 1em">fax2tiff
&minus; create a <small>TIFF</small> Class F fax file from
raw fax data</p>

<h2>SYNOPSIS
<a name="SYNOPSIS"></a>
</h2>



<p style="margin-left:11%; margin-top: 1em"><b>fax2tiff</b>
[ <i>options</i> ] [ <b>&minus;o</b> <i>output.tif</i> ]
<i>input.raw</i></p>

<h2>DESCRIPTION
<a name="DESCRIPTION"></a>
</h2>



<p style="margin-left:11%; margin-top: 1em"><i>Fax2tiff</i>
creates a <small>TIFF</small> file containing
<small>CCITT</small> Group 3 or Group 4 encoded data from
one or more files containing &lsquo;&lsquo;raw&rsquo;&rsquo;
Group 3 or Group 4 encoded data (typically obtained directly
from a fax modem). By default, each row of data in the
resultant <small>TIFF</small> file is 1-dimensionally
encoded and padded or truncated to 1728 pixels, as needed.
The resultant image is a set of low resolution (98
lines/inch) or medium resolution (196 lines/inch) pages,
each of which is a single strip of data. The generated file
conforms to the <small>TIFF</small> Class F ( <small>FAX)
specification for storing facsimile data.</small> This
means, in particular, that each page of the data does
<b>not</b> include the trailing <i>return to control</i> (
<small>RTC) code; as required</small> for transmission by
the <small>CCITT</small> Group 3 specifications. The old,
&lsquo;&lsquo;classic&rsquo;&rsquo;, format is created if
the <b>&minus;c</b> option is used. (The Class F format can
also be requested with the <b>&minus;f</b> option.)</p>

<p style="margin-left:11%; margin-top: 1em">The default
name of the output image is <i>fax.tif</i>; this can be
changed with the <b>&minus;o</b> option. Each input file is
assumed to be a separate page of facsimile data from the
same document. The order in which input files are specified
on the command line is the order in which the resultant
pages appear in the output file.</p>

<h2>OPTIONS
<a name="OPTIONS"></a>
</h2>


<p style="margin-left:11%; margin-top: 1em">Options that
affect the interpretation of input data are:</p>

<table width="100%" border="0" rules="none" frame="void"
       cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><b>&minus;3</b></p></td>
<td width="8%"></td>
<td width="78%">


<p>Assume input data is <small>CCITT</small> Group 3
encoded (default).</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><b>&minus;4</b></p></td>
<td width="8%"></td>
<td width="78%">


<p>Assume input data is <small>CCITT</small> Group 4
encoded.</p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><b>&minus;U</b></p></td>
<td width="8%"></td>
<td width="78%">


<p>Assume input data is uncompressed (Group 3 or Group
4).</p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><b>&minus;1</b></p></td>
<td width="8%"></td>
<td width="78%">


<p>Assume input data is encoded with the 1-dimensional
version of the <small>CCITT</small> Group 3 Huffman encoding
algorithm (default).</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><b>&minus;2</b></p></td>
<td width="8%"></td>
<td width="78%">


<p>Assume input data is 2-dimensional version of the
<small>CCITT</small> Group 3 Huffman encoding algorithm.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><b>&minus;P</b></p></td>
<td width="8%"></td>
<td width="78%">


<p>Assume input data is <b>not</b> EOL-aligned (default).
This option has effect with Group 3 encoded input only.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><b>&minus;A</b></p></td>
<td width="8%"></td>
<td width="78%">


<p>Assume input data is EOL-aligned. This option has effect
with Group 3 encoded input only.</p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><b>&minus;M</b></p></td>
<td width="8%"></td>
<td width="78%">


<p>Treat input data as having bits filled from most
significant bit ( <small>MSB) to most least bit (
<small>LSB).</small></small></p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><b>&minus;L</b></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small>Treat input data as having bits filled from least
significant bit ( <small>LSB) to most significant bit (
<small>MSB) (default).</small></small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;B</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Assume input data was encoded with black
as 0 and white as 1.</small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;W</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Assume input data was encoded with black
as 1 and white as 0 (default).</small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;R</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Specify the vertical resolution, in
lines/inch, of the input images. By default input are
assumed to have a vertical resolution of 196 lines/inch. If
images are low resolution facsimile, a value of 98
lines/inch should be specified.</small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;X</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Specify the width, in pixels, of the input
images. By default input are assumed to have a width of 1728
pixels.</small></small></p> </td></tr>
</table>


<p style="margin-left:11%; margin-top: 1em"><small><small>Options
that affect the output file format are:</small></small></p>

<table width="100%" border="0" rules="none" frame="void"
       cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">



<p style="margin-top: 1em"><small><small><b>&minus;o</b></small></small></p> </td>
<td width="8%"></td>
<td width="78%">


<p style="margin-top: 1em"><small><small>Specify the name
of the output file.</small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;7</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Force output to be compressed with the
<small>CCITT</small> Group 3 Huffman encoding algorithm
(default).</small></small></p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;8</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Force output to be compressed with the
<small>CCITT</small> Group 4 Huffman
encoding.</small></small></p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;u</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Force output to be uncompressed (Group 3
or Group 4).</small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;5</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Force output to be encoded with the
1-dimensional version of the <small>CCITT</small> Group 3
Huffman encoding algorithm.</small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;6</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Force output to be encoded with the
2-dimensional version of the <small>CCITT</small> Group 3
Huffman encoding algorithm (default).</small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;a</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Force the last bit of each <i>End Of
Line</i> ( <small>EOL) code to land on a byte boundary
(default). This &lsquo;&lsquo;zero padding&rsquo;&rsquo;
will</small> be reflected in the contents of the
<i>Group3Options</i> tag of the resultant
<small>TIFF</small> file. This option has effect with Group
3 encoded output only.</small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;p</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Do not EOL-align output. This option has
effect with Group 3 encoded output only.</small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;c</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Generate &quot;classic&quot; Group 3 TIFF
format.</small></small></p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;f</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Generate TIFF Class F (TIFF/F) format
(default).</small></small></p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">


<p><small><small><b>&minus;m</b></small></small></p></td>
<td width="8%"></td>
<td width="78%">


<p><small><small>Force output data to have bits filled from
most significant bit ( <small>MSB) to most least bit (
<small>LSB).</small></small></small></small></p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">



<p><small><small><small><b>&minus;l</b></small></small></small></p> </td>
<td width="8%"></td>
<td width="78%">


<p><small><small><small>Force output data to have bits
filled from least significant bit ( <small>LSB) to most
significant bit ( <small>MSB)
(default).</small></small></small></small></small></p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">



<p><small><small><small><small><b>&minus;r</b></small></small></small></small></p> </td>
<td width="8%"></td>
<td width="78%">


<p><small><small><small><small>Specify the number of rows
(scanlines) in each strip of data written to the output
file. By default (or when value <b>0</b> is specified),
<i>tiffcp</i> attempts to set the rows/strip that no more
than 8 kilobytes of data appear in a strip (with except of
G3/G4 compression schemes). If you specify special value
<b>&minus;1</b> it will results in infinite number of the
rows per strip. The entire image will be the one strip in
that case. This is default in case of G3/G4 output
compression schemes.</small></small></small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">



<p><small><small><small><small><b>&minus;s</b></small></small></small></small></p> </td>
<td width="8%"></td>
<td width="78%">


<p><small><small><small><small>Stretch the input image
vertically by writing each input row of data twice to the
output file.</small></small></small></small></p></td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">



<p><small><small><small><small><b>&minus;v</b></small></small></small></small></p> </td>
<td width="8%"></td>
<td width="78%">


<p><small><small><small><small>Force <i>fax2tiff</i> to
print the number of rows of data it retrieved from the input
file.</small></small></small></small></p> </td></tr>
<tr valign="top" align="left">
<td width="11%"></td>
<td width="3%">



<p><small><small><small><small><b>&minus;z</b></small></small></small></small></p> </td>
<td width="8%"></td>
<td width="78%">


<p><small><small><small><small>Force output to be
compressed with the LZW
encoding.</small></small></small></small></p> </td></tr>
</table>

<h2>DIAGNOSTICS
<a name="DIAGNOSTICS"></a>
</h2>



<p style="margin-left:11%; margin-top: 1em"><small><small><small><small>The
following warnings and errors come from the decoding
routines in the library.</small></small></small></small></p>


<p style="margin-left:11%; margin-top: 1em"><small><small><small><small><b>Warning,
%s: Premature EOL at scanline %d (x %d).\n</b>. The input
data had a row that was shorter than the expected width. The
row is padded with
white.</small></small></small></small></p>


<p style="margin-left:11%; margin-top: 1em"><small><small><small><small><b>%s:
Premature EOF at scanline %d (x %d).\n</b>. The decoder ran
out of data in the middle of a scanline. The resultant row
is padded with white.</small></small></small></small></p>


<p style="margin-left:11%; margin-top: 1em"><small><small><small><small><b>%s:
Bad code word at row %d, x %d\n</b>. An invalid Group 3
<i>code</i> was encountered while decoding the input file.
The row number and horizontal position is given. The
remainder of the input row is discarded, while the
corresponding output row is padded with
white.</small></small></small></small></p>


<p style="margin-left:11%; margin-top: 1em"><small><small><small><small><b>%s:
Bad 2D code word at scanline %d.\n</b>. An invalid Group 4
or 2D Group 3 <i>code</i> was encountered while decoding the
input file. The row number and horizontal position is given.
The remainder of the input row is discarded, while the
corresponding output row is padded with
white.</small></small></small></small></p>

<h2>BUGS
<a name="BUGS"></a>
</h2>



<p style="margin-left:11%; margin-top: 1em"><small><small><small><small>Input
data are assumed to have a a &lsquo;&lsquo;top
left&rsquo;&rsquo; orientation; it should be possible to
override this assumption from the command
line.</small></small></small></small></p>

<h2>SEE ALSO
<a name="SEE ALSO"></a>
</h2>



<p style="margin-left:11%; margin-top: 1em"><small><small><small><small><b><small>CCITT</small>
Recommendation T.4</b> (Standardization of Group 3 Facsimile
Apparatus for Document
Transmission).</small></small></small></small></p>


<p style="margin-left:11%; margin-top: 1em"><small><small><small><small><b>The
Spirit of TIFF Class F</b>, an appendix to the TIFF 5.0
specification prepared by Cygnet
Technologies.</small></small></small></small></p>


<p style="margin-left:11%; margin-top: 1em"><small><small><small><small><b>tiffinfo</b>(1),
<b>tiffdither</b>(1), <b>tiffgt</b>(1),
<b>libtiff</b>(3)</small></small></small></small></p>


<p style="margin-left:11%; margin-top: 1em"><small><small><small><small>Libtiff
library home page:
<b>http://www.simplesystems.org/libtiff/</b></small></small></small></small></p>
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